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onsemi NCP699SN31T1G
- Part No.:
- NCP699SN31T1G
- Manufacturer:
- onsemi
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
NCP699SN31T1G.pdf
- Description:
- IC REG LINEAR 3.1V 150MA 5TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,496
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Product details
Overview
NCP699SN31T1G from onsemi is a fixed-output CMOS low-dropout (LDO) voltage regulator delivering 3.1 V at up to 150 mA, featuring 40 µA typical ground current, 330 mV dropout at 150 mA, and ±2.0% output voltage accuracy - designed for battery-powered portable electronics requiring ultra-low quiescent power.
For engineers reviewing the NCP699SN31T1G datasheet, pinout, applications, or equivalent options, key selection criteria include its TSOP-5 package compatibility, enable control with sub-1 V logic support, stability with 1 µF ceramic capacitors, and thermal shutdown protection across −40 °C to +85 °C ambient operation.
Technical Context
The NCP699SN31T1G integrates a PMOS pass transistor, precision voltage reference, error amplifier, and internal current/temperature limit protection. Its enable input supports active-high logic with 0.95 V turn-on threshold and 0.3 V turn-off threshold, enabling precise system-level power sequencing.
It operates with input voltages from 2.1 V to 6.0 V and maintains regulation down to a 330 mV input–output differential at full 150 mA load. Ground current remains constant at 40 µA typical across load and temperature, decoupling bias consumption from output current demand.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.1 V ±2.0% - tightly regulated rail for 3.3 V I/O domain logic or low-voltage microcontrollers. |
| Max Output Current | 150 mA - sufficient for baseband processors, RF front-ends, or sensor subsystems in handheld devices. |
| Dropout Voltage | 330 mV at 150 mA - enables operation from single-cell Li-ion (3.0 V min) or two-cell alkaline (3.2 V min) sources. |
| Ground Current | 40 µA typical - ensures >1000-hour standby life in coin-cell–powered applications. |
| Enable Threshold | 0.95 V (turn-on), 0.3 V (turn-off) - compatible with 1.2 V, 1.8 V, and 3.3 V GPIO without level-shifting. |
| Capacitor Support | Stable with ≥1 µF ceramic or tantalum - eliminates need for high-ESR capacitors and reduces BOM cost. |
| Operating Temp | −40 °C to +85 °C - qualified for consumer and industrial portable equipment environments. |
Pinout & Package
Package: TSOP-5 (Case 483), 3.00 × 1.50 × 0.95 mm, Pb-free, surface-mount.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Vin | Positive input supply - accepts 2.1 V to 6.0 V; must be decoupled with ≥1 µF capacitor near pin. |
| 2 | Gnd | Power ground reference - low-impedance return path critical for noise immunity and thermal performance. |
| 3 | Enable | Active-high enable control - pull high to Vin for operation; pull ≤0.3 V to disable and reduce ground current to 0.03 µA. |
| 4 | N/C | No internal connection - must remain unconnected; no routing or stubs permitted. |
| 5 | Vout | Regulated 3.1 V output - requires ≥1 µF output capacitor; ESR from 0 to 5 Ω supported. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low ground current | 40 µA typical across full load and temperature range - minimizes battery drain during active operation. |
| Sub-1 V enable compatibility | 0.95 V logic-high threshold - interfaces directly with modern low-voltage MCUs and FPGAs without external level shifters. |
| Low-noise regulation | 100 µVRMS output noise (100 Hz–100 kHz) - suitable for analog sensors and RF power amplifiers. |
| Thermal shutdown | Activates at ~160 °C junction temperature - prevents catastrophic failure during sustained overload or poor PCB thermal design. |
| Pb-free TSOP-5 package | RoHS-compliant, 0.95 mm pitch, 3.0 × 1.5 mm footprint - enables high-density portable PCB layouts. |
Applications
| Cellular Handsets | Portable Medical Monitors |
|---|---|
|
Use Scenario: Powering baseband processor I/O rails and SIM card interface in slim smartphone designs. IC Role / Device Role / Timing Role: Primary 3.1 V LDO supplying digital core logic with fast load transient response. Use Value: 330 mV dropout enables direct regulation from declining Li-ion cells (3.0–4.2 V), extending usable battery capacity by ~8% versus higher-dropout alternatives. |
Use Scenario: Providing stable 3.1 V bias to ECG front-end ADC and Bluetooth LE radio in wearable patient monitors. IC Role / Device Role / Timing Role: Low-noise, enable-controlled power stage isolating sensitive analog circuitry from digital switching noise. Use Value: 100 µVRMS output noise and 40 µA quiescent current ensure >7-day battery life and <1 LSB noise floor in 12-bit medical-grade acquisition. |
| Wireless Headsets | Industrial Handheld Scanners |
|
Use Scenario: Regulating audio codec and MEMS microphone bias in Bluetooth earbuds with space-constrained PCBs. IC Role / Device Role / Timing Role: Compact, low-ESR-stable LDO enabling use of 0402-size 1 µF ceramic capacitors. Use Value: TSOP-5 footprint (3.0 × 1.5 mm) saves >40% board area versus SOT-23-5, critical for sub-2 g form factors. |
Use Scenario: Supplying 3.1 V to barcode image sensor and ARM Cortex-M4 MCU in ruggedized warehouse scanners. IC Role / Device Role / Timing Role: Enable-controlled power domain allowing firmware-triggered sleep/wake cycles. Use Value: 0.03 µA disable current and −40 °C to +85 °C rating support cold-storage logistics and extended field deployment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-3102E/TT | 300 mA max output, 600 mV dropout at 250 mA, 1.6 µA quiescent current - higher IQ but lower dropout at light loads. | Preferred for ultra-low-power wake-on-event systems where <2 µA sleep current dominates design. | Select MCP1700T-3102E/TT only if system sleep duty cycle exceeds 99.5% and peak load stays below 100 mA. |
| TLC7731QDCKR | 3.1 V fixed, 200 mA, 450 mV dropout at 150 mA, 120 µA ground current - higher IQ and dropout, automotive AEC-Q100 Grade 2 qualified. | Suitable for automotive infotainment peripherals requiring extended temperature (−40 °C to +125 °C) and qualification. | Choose TLC7731QDCKR only when AEC-Q100 compliance and 125 °C junction operation are mandatory. |
Compared with MCP1700T-3102E/TT and TLC7731QDCKR, the NCP699SN31T1G delivers optimal balance of ultra-low 40 µA operating current, 330 mV dropout at full load, and compact TSOP-5 packaging - making it the preferred choice for cost-sensitive, space-constrained portable consumer electronics where continuous 150 mA delivery and battery runtime are primary constraints.
Availability
NCP699SN31T1G is available at Aetrix Electronics and suitable for cellular handsets, portable medical monitors, and wireless headsets requiring stable component supply with consistent parametric performance and long-term manufacturability planning.
Supply support for NCP699SN31T1G includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
onsemi (formerly ON Semiconductor) is a global semiconductor supplier focused on energy-efficient electronics, serving automotive, industrial, cloud, and consumer markets with discrete, analog, and power management solutions.
The NCP699 series belongs to onsemi's low-power linear regulator product line, engineered specifically for battery-operated portable devices demanding minimal quiescent current, small footprint, and robust thermal protection without external components.
FAQ
What is the maximum input voltage rating for the NCP699SN31T1G?
The NCP699SN31T1G has an absolute maximum input voltage (Vin) rating of 6.0 V. Operation above this voltage risks permanent damage. The recommended operating range is 2.1 V to 6.0 V, with dropout performance optimized when Vin exceeds Vout by ≥0.5 V. For 3.1 V output, minimum functional input is 3.43 V under worst-case 3% tolerance and 330 mV dropout conditions.
Does the NCP699SN31T1G require an external resistor network to set output voltage?
No, the NCP699SN31T1G is a fixed-output LDO with internally trimmed 3.1 V regulation - no external resistors are needed or supported. The output voltage is factory-set using laser trimming of internal feedback resistors, ensuring ±2.0% accuracy over temperature and load without user configuration.
Can the NCP699SN31T1G be used with ceramic capacitors smaller than 1 µF?
No - the NCP699SN31T1G is specified and characterized for stability only with ≥1 µF ceramic or tantalum output capacitance. Using smaller values may cause oscillation or degraded transient response. The datasheet explicitly recommends 1.0 µF minimum, and TDK part numbers C2012X5R1C105K and C1608X5R1A105K are validated for use with NCP699SN31T1G.
Is the NCP699SN31T1G still in active production?
No - per onsemi's datasheet revision 9 (February 2026), NCP699SN31T1G is marked as discontinued. While Aetrix Electronics maintains legacy inventory and offers last-time-buy support, new designs should consider alternative LDOs with active production status and documented long-term supply assurance.
What is the thermal resistance (RJA) of the NCP699SN31T1G in standard layout?
The NCP699SN31T1G has a junction-to-ambient thermal resistance (RJA) of 250 °C/W when mounted on an 80 × 80 × 1.5 mm FR4 PCB with 1 oz copper and 100 mm² copper pour. This value assumes no additional thermal vias or heatsinking; adding thermal vias beneath the exposed pad (if present) or increasing copper area can reduce RJA significantly.
NCP699SN31T1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 3.1V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.4V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 90 µA
- Current - Supply (Max):
- -
- PSRR:
- 55dB ~ 50dB (120Hz ~ 1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 5-TSOP
NCP699SN31T1G FAQ
1.How can I place an order for NCP699SN31T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP699SN31T1G on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for NCP699SN31T1G reliable?
The price and inventory of NCP699SN31T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP699SN31T1G is usually 5 days.
3.What payment methods are accepted for NCP699SN31T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP699SN31T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP699SN31T1G?
NCP699SN31T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP699SN31T1G order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for NCP699SN31T1G?
For technical support, including NCP699SN31T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP699SN31T1G requirements.
6.How does Aetrix verify that NCP699SN31T1G is sourced from the original manufacturer or authorized distributors?
All NCP699SN31T1G products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that NCP699SN31T1G meets industry standards.
7.What is the process for return or replacement of NCP699SN31T1G?
All NCP699SN31T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP699SN31T1G, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The NCP699SN31T1G part is unused and in its original packaging.
Return procedure for NCP699SN31T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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